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Bat in full flight at night, wing outstretched against a dark background

Val d'Aran · Guided activity

Bats and Night-time Wildlife in the Val d'Aran

A short dusk walk along the riverbanks, barns and bridges of the Val d'Aran to discover the valley's bats: echolocation, flight and a bat detector, with a guide.

  • CategoryAdventure and nature
  • LevelEasy
  • Duration2 hours
  • From€30 per person
5.0· 76 Google reviews
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Activity overview

Night-time biodiversity: the bats of the Val d'Aran

A short dusk walk along the valley's riverbanks, barns and bridges to discover bat activity: how bats fly, how they hunt using echolocation and why their presence says so much about the quality of their surroundings. With a guide and, when the equipment is available, an ultrasound bat detector.

Bat in full flight at night, wing outstretched against a dark background
  • AreaVal d'Aran
  • Duration2 hours
  • Group5 to 12 people
  • TimeDusk / nightfall

Reading the landscape

Val d'Aran: the landscape up close

Wildlife, Heritage, Plants and Geology: a closer look at the setting of this activity. Documentary images of species or places not taken at the exact point of the route are shown for reference only, and sightings are not guaranteed.

Common pipistrelle, reference image (wildlife)
Common pipistrellePipistrellus pipistrellus · Europe's smallest and most widespread bat, often seen hunting insects by rivers, bridges and barns at dusk.
Greater mouse-eared bat, reference image (wildlife)
Greater mouse-eared batMyotis myotis · one of the largest bat species found in the Pyrenees, flying low over the ground or water.
Long-eared bat (Plecotus), reference image (wildlife)
Long-eared bat (Plecotus)Its ears are almost as long as its body and are folded under the wings at rest; it hunts by fluttering very close to the vegetation.
A roosting colony, reference image (wildlife)
A roosting colonyMany of the valley's species spend the day clustered together in barns, bridges or old buildings, heading out to hunt together at dusk.
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WildlifeBats of the Val d'Aran · observation without handling
View the documentary source ↗
Pont de Betren, reference image (heritage)
Pont de BetrenA traditional stone bridge in the valley, exactly the kind of waterside structure where bats are often active at dusk.
The village of Betren, reference image (heritage)
The village of BetrenAn Aranese village beside the Garonne, with traditional stone barns and buildings that serve as daytime roosts for several species.
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HeritageBetren, traditional architecture by the water
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Riverside woodland of the Garonne, reference image (plants)
Riverside woodland of the GaronneAlders and willows along the river create a damp microclimate with more insects, and therefore more bats hunting at dusk.
Meadows around the barns, reference image (plants)
Meadows around the barnsThe hay meadows around Betren's traditional barns are a regular hunting ground for several of the valley's species.
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PlantsRiverside woodland along the Garonne at Betren
View the documentary source ↗
The Garonne on the lower stretch of the valley, reference image (geology)
The Garonne on the lower stretch of the valleyBy the time it reaches Betren, the Garonne has lost some of the gradient of its upper reaches, with slow-flowing pools that favour insect and bat activity.
A stone bridge across the glacial valley, reference image (geology)
A stone bridge across the glacial valleyThe Pont de Betren crosses the flat floor of the U-shaped valley carved out by the Garonne glacier, the typical landscape of the Val d'Aran.
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GeologyThe Garonne as it flows through Betren
View the documentary source ↗

Local photos: Ecotour archive. Documentary images: free-licence image banks or Wikimedia Commons, used under licence or with permission. The species and features shown are documented in the area, but seeing them during the activity is not guaranteed.

Before you book

Is this activity right for you?

Check at a glance.

Great fit

You'll love it if…

  • You are looking for a short, original night-time activity for the whole family.
  • You are interested in the valley's real biodiversity, beyond its daytime wildlife.
Worth a second look

It might not be for you if…

  • You want guaranteed close-up sightings of bats or to handle them: this activity is about respectful observation from a distance.

Included

  • Mountain leader / environmental educator

  • Interpretation on bats, night-time wildlife and biodiversity

  • Third-party liability and accident insurance

  • Ultrasound bat detector, depending on equipment availability

  • Included in the activity.

    Public liability and accident insurance

Not included

  • Transport

  • Food and drink

  • Personal equipment

Additional information

  • Minimum group size

    A minimum of 5 people is recommended; for private groups or groups below the minimum, ask us for a price.

  • No handling of wildlife

    At no point during the activity do we enter roosts or handle bats.

Before you set off

What to bring

Hiking boots

Comfortable shoes for walking at dusk

Warm layers and waterproofs for rain and wind

A light warm layer, even in summer

Head torch and trekking poles

Head torch or torch, without shining it directly at wildlife

Map, compass and personal items for the route

Insect repellent, avoiding strong perfumes

Once your date is confirmed, you'll receive the final kit list, adapted to the forecast and ground conditions.

Frequently asked questions

What people ask us

01Is it dangerous to get close to bats?

No: European bats are not aggressive and do not get caught in your hair. The activity always takes place at a distance, without handling the bats or approaching their roosts.

02Are we guaranteed to see bats?

Sightings are not guaranteed. The value of the activity lies in learning about echolocation and the bats' role in the ecosystem and, when the equipment is available, listening to their calls translated by an ultrasound bat detector.

03Is it suitable for children?

Yes, from around age 6 as a guide. It is a short, gently paced activity designed for families.

04When is the best time of year to go?

Between June and September, ideally between June and August, at dusk, when flight activity is at its peak.

05How long does it last and how much does it cost?

Two hours, from €30 per person.

06Where does the outing take place?

Along riverbanks and around barns and bridges in the Val d'Aran, where the valley's bats usually hunt and roost.

Gallery

Moments from the activity

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What people who have done our activities say

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